Alarm device



.rgl 65 Aug. 19, 1952 c. L. EADS 2,607,313

ALARM DEVICE Filed June so, 1950 2 SHEETS-SHEET .1

In venfak.

' Chanle"; L Eads BY -W ATTORNEY.

Aug. 19-, 1952 c, s 2,607,313

ALARM DEVICE Filed June 30, 1950 v 2 SHEETSSHEET 2 25 .2. 3 agga.

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C/LlflQS L. EaoIS Patented Aug. 19, 1952 UNITED STATE ALARM DEVUIMCEJY Charles L. Eads, Los-Angeles, Calif. 1 Application Ja een, 1950, Serial No; 171,478'

1 This invention belongs to that general class of devices known as alarms for: use on doors, windows; etc;, wherever protection is desired. A glass'breaking means is provided for, emergency use'of' the lock'and for setting-off the alarm,'and keymeans are provided for unlocking the door or window without setting-01f the" alarm. The alarmmeanswhen once started, maybe con tinuous or intermittent in operation with high or low-volume depending upon the particular (place where the invention is employed. Soundless indicating means, such as lights and moving signals may be combined with the invention and electrical and mechanical'connections'made to warn a watchman or guard atsome remote point.

' Theinvention has among its objects the production of a means-of the kind described and claimed that is simple, durable and compact in structure, inexpensive to make and manufac ture, dependabl and efficient in use and service, convenient to handle and install, and pleasing and attractive in appearance and very satisfactory for use whenever and wherever found *applicable. l e

Other objects, advantages and features of this particular'invention will appear-from a careful perusal of .the accompanying drawings, the-sub- 'oineddetailed description, the preamble of these specifications, and theclaims appended hereto.

Below, applicant .describes one of the prefer able forms ofhis invention .in order'to teach the art'thereof, and showhow to make and us the same, but it .is to be understood that .the drawingsand description thereof are not to limit the invention in any sense whatsoever except as the same may be limited by the prior art. Language employed herein is not to be construed as giving any unauthorized person 'or' organization the right to make, use and/ or sell the invention herein disclosed.

In' the drawings:

Figure. 1 is an elevational view of a portionof onev side of a typical door with the combination al arm and'lock device installed thereon;

Figure 2 is an elevational view, partly in section,.cover removed, enlarged, showing the work'- ing parts;

Figure 3 is a vertical sectional view taken substantially along the line 3-3 of Fig. 2;

Figure 4 is a partial plan view showing a detailed part and taken along the line 4-4 of Fig. 3;

Figure; 5 is' a sectional view taken along the line 5-5-of 'Fig. 2;

Figure 6 is an elevational view of some parts;

Figure 7 is a perspective view of some. bell parts;

I Figure 8 is a perspective view of a detailed p t; j

Figure 9 is a section-taken along line B -9 of Figure 2.

The particular device, as illustrated, employs a wind-style mechanical bell protected by a. suitable casing against damage and tinkering so that the fire door or other type of emergency door or opening will be in a foolproof order at all times. Unless such an emergency exit or entrance lock canbe depended upon atall times to give carefree service, there would be no real advantage in their placement.

As shown in the drawings, the reference character -l indicates an emergency exit door which has vertically arranged hinges along its edge 2 so that the edge-3 is shiftabl'eto and fromthe door jamb 4. v The lock keeper is indicated atl', and held in fixed position by screws or other means.

The alarm mechanism is mounted upon a base 5 which has suitable means, such as screws or bolts for securing it to the door l;'the screws passing through holes in the base. The well known bolt or tongue 6 rides between the spaced guides 8 and 1 and the bolt has the rod 9 fixed thereto which slides through a suitable opening of the'guide member it; a spring l I being coiled around the rod to constantly urge the bolt outwardly toward the keeper. It may be well to state here,- that any suitable keeper may be employed with the invention, but it is preferred touse one having the heavy protection flange like the one indicated at 4".

The bolt rod has the stop plate l3 fixed thereto'which can ride within certain limits, that is, between the guide In and-the catch element [4.

In. order to move the bolt without disturbing the .catch'ui 4; a camarm I5 is employed and this arm |5 is securelylfixedto' the lockstem l6, and this stenizzextends from th'e well knowrrtype of cylinder: lock--11 which is worked by the key 18.

Obviouslyjthedocking element I'I is'welded or otherwise isecurely'fixed'inth'e position shown to the .top' surfac'ezofthe coverall casing H! which neatly .andv thoroughly covers the locking and workingmechanisms and also the bell portion of theidevice; theipart' coveringthexbell is indicated ati;20I The camarm l5 shiftsthe finger extension"2l .onth'e .stopplate l3" so: as to draw inwardlyithelbo'lt 6 against the compression spring The guide I and the catch I4 are part of a movable carriage and are joined together as an integral unit by the fiat side rails 23 and 24 which neatly and smoothly slide between the elongated guide bars 25 and 26 which are secured to or integral with the base 5. These guide bars are surfaced with a suitable non-rusting metal or other material so that weather conditions will not prevent their proper working. One end of each guide bar has "a; post ZT-to which is attached the middle portion of a coiled spring 28, the ends of which are connected to their respective proximate holding means 29 and 30 on the guide plate and slide rails, as shown, in order to provide a very strong means of constantly urging the entire carriage away from the keeper 4' so as to positively shift the bolt rod and its tongue 6 into the confines of the casing.

The catch element I4 is held in position by an appreciable force, produced by the springs 28 against a stop plate 32 which is secured to the top portion of the boss element 33. When the catch element I4 is raised, the edges I4 and I4" engage the stop plate 32, but when this catch element is forced downwardly, the edges I4 and I4 are freed from the fixed stop plate 32 and the central opening of the catch element I4 envelops the boss 33, see Fig. 2.

The portion 33 of the base has a bore or dowel pin receiving opening 34 to accommodate the pin 35 which is integral with the casing, see Fig. 5, which is one of the holding means for anchoring the casing to the base. The bolt side of the device has the screws 8 and I which hold the flange of the coverall casing to the threaded bores in the guides 8 and I, see Fig. 2.

A recessed glass plate is provided directly over the catch element I4, see Fig. 5, and over this glass plate there is a hammer or breaker element 36 which has an integral arm 31 that is pivoted at 38 to a bracket arm means 39 that is integral with the top of the casing [9. When this hammer is struck by any means with sufficient force in the direction indicated by the arrow in Fig. 5, the hammer breaks the glass and forces the catch element l4 downwardly to release it from the stop plate 32 and thus move the carriage so as to withdraw the bolt from the keeper 4'.

The bell mechanism is of any standard make suitable for the purposes and is preferably of the winding type, that is, the bell is rotated in order to wind it. Such a bell device may have the main spring 50 which has one end thereof indicated at 5| fixed to a post and the other end fixed to the winding stem 52 upon which is attached the bell 53.

A large gear 54 is fixed to the stem and this gear is in mesh with a smaller gear 55 through the gear reduction means 56. The gear 55 has in a fixed relationship therewith the escapement wheel 51 which operates the escapement type clapper member 58 for ringing the bell 53.. The foregoing elements are well known in the art and no claim is made thereto, that is, the bell structure per se. In order to start and stop the sounding of the bell in a positive manner, a flanged lever .59 is provided which is pivoted to a false bottom (H at 60, the other end thereof, see Fig. 7 in particular, has a hook-like portion indicated at 62 which passes part way around a post or stud 'of the gear means 56, as shown; and this distal end also has the turned-up or flanged portion 63 which has a protruded dog 64 which engages the teeth on the gear means 4 56 and prevents same from rotating when the dog is in downward position.

The lever 59 is sprung downwardly so that the dog 64 always engages the teeth of the gear means 56 until raised. For raising the dog 64, that is, the entire end of the lever 59, a bar 65 is employed and this bar is pivoted at 66 to the base. The bell-end of the bar has a turned-up corner portion or cam-like means 61 which rides smoothly under the lever 59 in a sliding manner and when shifted clockwise as viewed in Fig. 2, forces the lever end 63 upwardly. The other end of this bar 65 has a narrowed and protruded portion 68 that is shifted to the left when struck by the guide plate II] of the carriage, but shifted to the right when struck by the catch l4 of the carriage, see Fig. 2, thus allowing the bellclapper 58 to operate only when the guide plate I0 strikes the pivoted bar 65.

From the foregoing, it should now be clear that when the glass 10 is broken by a blow upon the hammer means 36, the catch element I4 is forced downwardly away from its stop 32 and thus releases the carriage mechanism so it will automatically shift and move the levers 65 and 59 so as to release the gear means 56 by displacing the dog means 64.

In the event it is desired toopen the lock, that is withdraw the bolt or tongue 6 from its keeper without disturbing the set position of the automatic mechanism, the key I8 is employed to rotate the arm I5 and force the plate I 3 to the left as shown in Fig. 5; this plate I3 not disturbing the carriage at all.

It is, of course, understood that various changes and modifications may be made in the details of form, style, design, materials and construction of the whole or any part of the specifically described embodiment of this invention without departing from the spirit thereof in that such changes and modifications are considered as being within the scope of the following claims.

I claim:

1. In an alarm device for emergency doors and the like, a base and a cover therefor defining a housing, operating mechanism in said housing comprising carriage means and a bolt shiftable therewith and independently thereof, a catch element carried by said carriage means, an alarm unit mounted on said base, means interposed between said carriage means and said alarm unit for causing operation of the alarm unit when said catch element is moved in a certain direction, spring means attached to said carriage means and to portions of said base constantly urging said carriage means in a direction to release and operate said alarm unit, a stop element fixed to said base adapted to hold the carriage means in inoperative spring tensioned position, means on said catch element engaging sai stop element when said catch element is in a latching position, said housing containing an aperture adjacent said catch element, a frangible element closing said aperture, and external hammer means pivoted to said housing, said hammer means being adapted to break said frangible element, release said catch element, and thereby actuate said alarm unit.

2. In an alarm device for emergency doors and the like, a base and a cover therefor defining a housing, operating mechanism in said housing comprising carriage means and a bolt shiftable therewith and independently thereof, a catchelement carried by said carriage means, guidesfor said carriage fixed to said base,.an alarm unit mounted on said base, means transmitting movement of said catch element in one direction to actuate said alarm unit, spring means attached to said carriage means and to portions of said base constantly urging said catch lement in a direction to release and operate said alarm unit, a stop element fixed to said base adapted to hold the catch element in inoperative spring tensioned position, means on the catch element engaging said stop plate when the catch element is in a latching position, said alarm unit having a toothed wheel, a pivoted spring lever in said unit having a dog at one end thereof engaging a tooth on the Wheel in its normally lowered position, and a bar pivoted to said base having a cam at one end engageable with said dog to raise said lever and release said toothed wheel, the other end of said bar being located in the line of movement of a portion of said catch element whereby said catch element can shift said bar to release said wheel.

3. In a locking device for closure means, a frame, an alarm mechanism mounted on said frame, a carriage movably supported on' said frame, a spring biasing said carriage in one direction relative to said frame, an actuator transmitting movement of said carriage in said direction to operate said alarm mechanism, detent means for restraining movement of said carriage relative to said frame, a bolt movable with said carriage and relative thereto, a spring biasing said bolt in another direction, key actuated meansfor shifting said bolt independently of said carriage, and cover mean protecting said detent against undetected displacement.

4. In a locking device for closure means, a frame, an alarm mechanism mounted on said frame, guide means carried by said frame, a carriage reciprocably supported on said frame for movement relative to said guide means, a spring biasing said carriage in one direction relative to said frame, an actuator transmitting movement of said carriage in said direction to operate said alarm mechanism, detent means for restraining movement of said carriage relative to said frame, a bolt movable with said carriage and relative thereto, a spring biasing said bolt in another direction, key actuated means for shifting said bolt independently of said carriage, and cover means protecting said detent against undetected displacement.

5. In a locking device for closure means, a frame, an alarm mechanism mounted on said frame, a carriage movably supported on said frame, a spring biasing said carriage in one direction relative to said frame, an actuator transmitting movement of said carriage in said direction to operate said alarm mechanism, detent means for restraining movement of said carriage relative to said frame, a bolt movable with said carriage and reciprocable relative thereto, a spring biasing said bolt in another direction, key actuated means for shifting said bolt independently of said carriage, and cover means protecting said detent against undetected displacement.

6. In a locking device for closure means, a frame, an alarm mechanism mounted on said frame, a carriage movably supported on said frame, a spring biasing said carriage in one direction relative to said frame, an actuator transmitting movement of said carriage in said direction to operate said alarm mechanism, detent means secured to said carriage for restraining movement of said carriage relative to said frame, a bolt movable with said carriage and relative thereto, a spring biasing said bolt in another direction, key actuated means for shifting said bolt independently of said carriage, and cover means protecting said detent against undetected displacement.

7. In a locking device for closure means, a frame, a cover defining a housing with said frame, an alarm mechanism mounted on said frame, a carriage movably supported on said frame, a spring biasing said carriage in one direction relative to said frame, an actuator transmitting movement of said carriage in said direction to operate said alarm mechanism, detent means for restraining movement of said carriage relative to said frame, a bolt movable with said carriage and relative thereto, a spring biasing said bolt in another direction, key actuated means for shifting said bolt independently of said carriage, said housing containing an opening registering with said detent and a frangible member covering said opening and protecting said detent against undetected displacement.

8. In a locking device for closure means, a frame, an alarm mechanism mounted on said frame, a carriage movably supported on said frame, a spring biasing said carriage in one direction relative to said frame, an actuator transmitting movement of said carriage in said direction to operate said alarm mechanism, detent means displaceable in a path substantially normal to said direction for restraining movement of said carriage relative to said frame, a bolt movable with said carriage and relative thereto, a spring biasing said bolt in another direction, key actuated means for shifting said bolt independently of said carriage, and cover means protecting said detent against undetected displacement.

9. In a locking device for closure means, a

housing including a frame, an alarm mechanism mounted on said frame, a carriage movably supported on said frame, a spring biasing said carriage in one direction relative to said frame, an actuator transmitting movement of said carriage in said direction to operate said alarm mechanism, detent means for restraining movement of said carriage relative to said frame, a bolt movable with said carriage and relative thereto, a spring biasing said bolt in another direction, key actuated means for shifting said bolt independently of said carriage, a destructib-le cover carried by said housing protecting said detent against undetected displacement, and means carried externally of said housing for destroying said cover.

CHARLES L. ELADS.

REFERENCES CITED UNITED STATES PATENTS Name Date Downing July 14, 1936 Number 

